Improvement in take-up mechanisms for sewing-machines



J. F. CHAMBERLAIN. Take-Up Mechanism for Sewing-Machines.

No. 197,996. Patented Dec". 11,1877.

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" JAMES F. CHAMBERLAIN, on HAMILTON, ONTARIO, GANADA,ASSIGNOR TO RICHARDMOTT WANZER, OF SAME PLACE.

IMPROVEMENT IN TAKE-UP MECHANISMS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 197,996, dated December11,1877; application filed October 23, 1877.

. To all-whom it may concern:

Be it known that I, JAMES FRANKLIN CHAM- BERLAIN, of Hamilton, in theProvince of Ontario and Dominion of Canada, have invented certain newand useful Improvements in Sewing-Machines, of which the following is aspecification:

This invention relates to certain improvements in sewing-machines, itsobject being to provide the same with a simple and effective takeupmechanism which will require but a limited working space, and which willgive an accurate and positive movement to the take-up.

To this end my invention consists in the combination, with the take-uplever, and the lever by which it is operated, of a link attached to onearm of said last-mentioned lever and to the needle-bar, and a stud orprojection having an inclined or beveled face, adapted to work incontact with a similar face formed upon the end of the lever whichactuates the take-up, the said lug on the needle-bar serving to give theinitial movement to the take-up while the link is out of workingposition, the link serving to give the final movement to the take-up asthe downward movement of the needle-bar continues, and the entiremovement to the take-up during the upward movement of the needle-bar, asmore fully hereinafter set forth.

In the drawings, Figure 1 represents a front view of the plate attachedto the forward end of the upper standard of the machine, and carryingthe needle-bar shaft and take-up. Fig. 2 is a rear view of said platedetached, with the works exposed. Fig. 3 is an enlarged view, showingthe take-up mechanism; and Fig. 4, a detail view of the same.

The letter A represents the front plate of the standard which supportsthe upper works of the machine, and B O the ways therein, in which thepresser-foot and needle-bar are secured. The letter D represents theneedlebar, which is of the ordinary construction,

. and adapted to reciprocate vertically in the ways 0. The letter Erepresents the take-up lever, which is secured to a shaft, F, passingthrough a bearing in the plate A, and journaled at its rear end in abridge, F, secured to the rear face of the plate A. The letter Grepresents the lever which actuates the takeup lever, said lever beingsecured to the shaft F between its two bearings. H represents a curvedlink, pivoted at one end to one end of the lever G, the other end ofsaid link being pivoted to the needle-bar, in such position that whensaid needle-bar is at its full upward stroke said link will be in ahorizontal position, or a position approximating thereto.

The needle-bar is provided with arstud or projection, H, the lower faceof which is inclined or beveled. The free end of the lever G is formedwith a similarly-inclined or beveled face, I.

The stud or projection H is so'located on the needle-bar that itsinclined face, when said needle-bar is at its full upward stroke, willengage the inclined face I on the lever G, for the purpose more fullyhereinafter explained.

The operation of my invention is as follows: The needle-bar being at itsfull upward stroke, as shown in Figs. 1 and 2, the link, owing to itshorizontal position, will exert very little or no power upon the leverGr; hence it is necessary to provide for the initial movement of saidlever Gr upon the downward movement of the needle-bar. This'is effectedby the stud H, which, engaging the end of the lever G, moves it untilthe link falls into a working position and commences to operate thetake-up.

It has heretofore been found impracticable to employ a link foroperating the take-up, owing to the fact that it is absolutely necessaryto prevent the link from assuming a horizontal position, thus requiringtoo long a throw of the needle bar, and considerable space for the linkto operate in, which are objectionable features in a sewing-machine, andwhich my invention entirely obviates.

What I claim, and desire to secure by Letters Patent, is-

In a sewing-machine, the combination, with the lever which actuates thetake-up lever,

stud or projeetion on the needle-bar, adapted the subscribing Witnesses;

to operate in conjunction with the free end of the take-up-aetuatinglever, whereby the JAMLS FRANKLIN CHAMBERLAIN initial movement to thetake-up is effected, Witnesses:

the vneedle-bar, and the connecting-link, of a have hereunto set mv handin the presence of substantially as set forth. WM. BRUCE,

In testimony that I claim the foregoing I JAMES WIDGERY.

